Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 443 [Rate centres in NPA 443] [Dial plan for NPA 443]

NXX: 251

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
443-251 A Catonsville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
443-251 0 Catonsville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-09-05   
443-251 1 Catonsville MD   515J IP HORIZON LLC 238   2013-10-11   
443-251 2 Catonsville MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-02-12   
443-251 3 Catonsville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
443-251 4 Catonsville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2014-12-31   
443-251 5 Catonsville MD BLTMMDCHXFX  318J COMCAST IP PHONE, LLC 238   2014-08-21   
443-251 6 Catonsville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-12-13   
443-251 7 Catonsville MD BLTMMDDN2MD  508J CENTURYLINK COMMUNICATIONS, LLC 238   2014-04-02   
443-251 8 Catonsville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2014-10-10   
443-251 9 Catonsville MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2013-12-09   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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